Shandong Huashang Chemical Co., Ltd. is a high-tech enterprise focused on industry of fine chemicals research and develop, produce and sale. Shandong Huashang Chemical Co., Ltd. is located in Shan Dong Ji Nan China. we have the ability to provide you high quality products. More than 90 % of our products are exported to developed countries and regions such as north America, Europe, Japan, South Korea and the Middle East.
Basic Information
Product Name: Trisodium citrate dihydrate
CAS Number: 6132-04-3
Alias: Sodium citrate dihydrate
Molecular Formula: C6H5Na3O7·2H2O
Molecular Weight: 294.10
IUPAC Name: trisodium 2-hydroxypropane-1,2,3-tricarboxylate dihydrate
Structural Information
- Structure Type: Organic tricarboxylate sodium salt with crystal water
- Structural Features: Citric acid fully neutralized by sodium hydroxide, contains two crystal water molecules, weak alkaline, excellent chelating capacity for metal ions
Physical & Chemical Properties
- Appearance: White crystalline granules or powder
- Odor: Odorless, slight salty cool taste
- Melting Point: Loses crystal water at 150 °C, decomposes above 300 °C
- Solubility: Freely soluble in water; slightly soluble in ethanol; insoluble in ether
- Stability: Stable under normal sealed storage; loses crystal water when heated; stable in neutral and weak alkaline environment; reacts with strong acid to release citric acid
Synthesis & Applications
Production Method
Citric acid neutralized with sodium carbonate or sodium hydroxide solution, crystallized to obtain dihydrate trisodium citrate.
Main Applications
- Food additive: Acidity regulator, buffer, chelating agent, anticoagulant for beverages, dairy, canned food
- Pharmaceutical raw material: Blood anticoagulant, buffer agent for oral preparations
- Daily chemical additive: Stabilizer for detergent, cosmetic chelating agent
- Industrial auxiliary: Metal surface cleaning agent, electroplating buffer
Safety & Storage Instructions
- Hazard Classification: Low toxicity, non-irritant
- Personal Protection: Ordinary dust mask and gloves for powder handling
- Storage Condition: Hermetically sealed, cool dry ventilated warehouse, moisture-proof
- Transportation: General goods, avoid dampness and extrusion
Quality Specifications
- Purity: 99.0%–101.0%
- Loss on drying: 10.0%–13.0%
- Heavy Metals (Pb): ≤10 ppm
- Arsenic: ≤2 ppm
Information Summary Table
| Item | Specification |
| CAS Number | 6132-04-3 |
| Product Name | Trisodium citrate dihydrate |
| Synonym | Sodium citrate dihydrate |
| Molecular Formula | C6H5Na3O7·2H2O |
| Molecular Weight | 294.10 |
| Appearance | White crystalline powder/granules |
| Solubility | Easily soluble in water |
| Purity Standard | 99.0%–101.0% |
| Storage Condition | Sealed cool dry warehouse, moisture-proof |
| Hazard Property | Low toxic, non-irritant |
| Main Usage | Food acidity regulator, blood anticoagulant, industrial chelating agent |
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